KR20130088865A - Output member and multi-shaft drive device - Google Patents

Output member and multi-shaft drive device Download PDF

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Publication number
KR20130088865A
KR20130088865A KR1020137014931A KR20137014931A KR20130088865A KR 20130088865 A KR20130088865 A KR 20130088865A KR 1020137014931 A KR1020137014931 A KR 1020137014931A KR 20137014931 A KR20137014931 A KR 20137014931A KR 20130088865 A KR20130088865 A KR 20130088865A
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KR
South Korea
Prior art keywords
output
shaft
movable shaft
output shaft
movable
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KR1020137014931A
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Korean (ko)
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KR101592076B1 (en
Inventor
타카후미 히라타
료헤이 시게마츠
타카히로 후지이
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닛폰 하츠죠 가부시키가이샤
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Publication of KR20130088865A publication Critical patent/KR20130088865A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/065—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with a plurality of driving or driven shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0296—Central command actuator to selectively switch on or engage one of several special purpose circuits or mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F16H55/18—Special devices for taking up backlash
    • F16H55/20—Special devices for taking up backlash for bevel gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • F16H2055/065—Moulded gears, e.g. inserts therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19023—Plural power paths to and/or from gearing
    • Y10T74/19074—Single drive plural driven
    • Y10T74/19079—Parallel
    • Y10T74/19088—Bevel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/19688—Bevel

Abstract

Provided are a multi-axis drive device capable of weight reduction and cost reduction compared to the prior art. Mounted slidably on the output shaft 20, when the output side bevel gear 50 on the tip side of the movable shaft 40 meshes with the input side bevel gear 14 when it moves toward the input side bevel gear 14, the movable shaft ( 40 rotates, and the rotation of this movable shaft 40 transmits to the output shaft 20 WHEREIN: The movable shaft 40 and the output side bevel gear 50 are integrally molded with resin, and the output shaft 20 Also, the movable shaft 40 is slidably mounted on the outer circumferential side of the output shaft 20.

Description

OUTPUT MEMBER AND MULTI-SHAFT DRIVE DEVICE}

The present invention relates to, for example, a multi-axis driving apparatus for driving a plurality of output shafts with one motor suitable for application to a vehicle electric seat and the like and an output member suitable for application to the multi-axis driving apparatus.

In the vehicle seat, it is possible to adjust the position of a plurality of places, such as slides in the front and rear direction of the entire front and rear, or vertical movement of the seat surface, or reclining the seat bag (backrest), so that it can be adapted to the body shape and posture of the crew. There are many forms. Although adjustment of such a movable site | part was performed manually, in order to make it more convenient, the rolling seat which adjusts by a motor drive is provided.

In order to drive a plurality of movable parts independently of each other, a configuration in which one motor is connected to each output shaft connected to the movable site can be considered. However, this increases the number of motors. Here, it is efficient to drive a plurality of output shafts with one motor. Therefore, the power of the motor is transmitted through the clutch through each output shaft connected to the plurality of movable portions, and the clutch is intermittently connected to connect each movable portion. It is known to drive selectively (refer patent document 1-4).

Patent Document 1: Japanese Patent Application Laid-Open No. 58-97528 Patent Document 2: Japanese Patent Application Laid-Open No. 6-87363 Patent Document 3: Japanese Patent Application Laid-Open No. 62-183504 Patent Document 4: Japanese Patent Application Laid-Open No. 6-156123

In the conventional multi-axis drive device, there are complaints that the weight is increased or the cost is required, and improvement has been demanded.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an output member and a multi-axis driving apparatus that can be reduced in weight and cost.

The output member of a 1st aspect is the resin output shaft applied to the vehicle mechanical apparatus, the resin movable shaft attached to the said output shaft, the resin output side clutch member integrally attached to the said movable shaft, and the said output shaft And a guide portion configured to have a shape of one outer peripheral surface of the movable shaft and a shape of the other inner peripheral surface engaged with the one outer peripheral surface, the guide portion being slidable in the axial direction with respect to the output shaft and unable to rotate relative to the output shaft, A biasing member that biases in one direction or in the opposite direction in the axial direction is provided.

In the first aspect, the movable shaft mounted on the output shaft is slidable in the axial direction with respect to the output shaft by the guide portion, while the relative rotation is impossible, and the biasing member is biased in one direction or the reverse direction in the axial direction. . The output side clutch member is integrally provided with this movable shaft. When this output side clutch member is rotated, this rotation is transmitted to the output shaft through the guide part from the movable shaft integral with the output side clutch member, and the output shaft rotates.

Here, the above-mentioned guide part is comprised by the shape of one outer peripheral surface among the output shaft and the movable shaft, and the shape of the other inner peripheral surface engaging with the said one outer peripheral surface. For this reason, the stress which acts between them at the time of transfer of rotation from a movable shaft to an output shaft can be disperse | distributed to the wide range of the said outer peripheral surface and an inner peripheral surface. For this reason, even if the output shaft, the movable shaft, and the output side clutch member integrated with this are made of resin, the strength necessary for transmitting the rotational force can be ensured, so that the weight can be reduced. In addition, when manufacturing the output shaft, the movable shaft, and the output side clutch member, it is possible to manufacture at low cost because it does not require metal working or the like, and the cost can be reduced.

The output member of the 2nd aspect is a 1st aspect WHEREIN: The said guide part is formed in the outer engagement part of the cross-sectional uneven | corrugated shape formed along the axial direction of the said one outer peripheral surface, and is formed in the said other inner peripheral surface, and slid to the said outer engagement part in the axial direction. It is comprised by the inner engagement part of the cross-sectional uneven | corrugated shape possibly engaged.

In the second aspect, positioning in the circumferential direction of the movable shaft corresponding to the output side becomes precise and high accuracy, and stress concentration at the time of transmission of rotation from the movable shaft to the output shaft is prevented and deterioration is prevented.

The output member of the third aspect, in the first aspect, the one side is formed in a cross-sectional polygonal shape, the other inner peripheral surface is formed in a cross-sectional polygonal shape that is slidably engaged in the axial direction to the outer peripheral surface of the one polygon, the guide The part is comprised by the outer peripheral surface of the said one polygonal shape, and the inner peripheral surface of the said other polygonal shape.

In a 3rd aspect, the effect similar to the 2nd aspect mentioned above can be acquired.

As for the output member of a 4th aspect, in any one of 1st-3rd aspect, the said biasing member is arrange | positioned inside the said output shaft and the said movable shaft.

In the fourth aspect, the biasing member is disposed inside the output shaft and the movable shaft, whereby the output shaft and the movable shaft can be made larger in diameter than the conventional one. For this reason, it is possible to improve the strength of the output shaft and the movable shaft while being made of a resin.

In the fourth aspect of the output member, in the fourth aspect, the inner circumferential surface of the movable shaft and the outer circumferential surface of the output shaft engage with each other, and the output shaft is formed with a guide hole opened at the tip side, and the coil spring as the biasing member is guided. It is accommodated in a hole and the movable shaft is provided with the positioning part which positions the edge part of the said coil spring.

In a 5th aspect, the guide shaft opened at the tip side is formed as an output shaft, and the coil spring arrange | positioned inside the output shaft and the movable shaft is accommodated in the guide hole. For this reason, since the length of a coil spring can be made long as the depth of a guide hole, durability of a coil spring can be improved. In addition, since the positioning portion for positioning the end of the coil spring is provided as the movable shaft, when the coil spring is reduced with sliding of the movable shaft corresponding to the output shaft, the tip of the output shaft and the coil spring are prevented from interfering or It can be suppressed.

The output member of a 6th aspect is a protrusion inserted in the edge part of the said coil spring in a 5th aspect.

In the sixth aspect, since the projection for positioning the coil spring on the movable shaft is inserted at the end of the coil spring, the buckling can be suppressed by the projection when the coil spring is reduced. Therefore, the interference between the tip of the output shaft and the coil spring can be effectively prevented or suppressed.

As for the output member of a 7th aspect, in any one of 1st-6th aspect, the said output side clutch member is shape | molded integrally with the said movable shaft.

In the seventh aspect, since the output-side clutch member is integrally molded to the movable shaft, the assembly process and the number of parts can be reduced, further reducing the cost, and there is no recoil between the two, resulting in recoil. Deterioration is prevented. In addition, by integrally molding the movable shaft and the output side clutch member, both of them do not have to be designed to include corresponding tolerances in consideration of thermal expansion difference, thereby reducing the cost.

The output member of an 8th aspect is an output side which engages with the input side bevel gear as an input side clutch member, when the said output side clutch member slides in the said one direction in any one of 1st-7th aspect. It is a bevel gear.

In the eighth aspect, since the output side bevel gear as the output side clutch member and the input side bevel gear as the input side clutch member are engaged with each other, for example, the input side clutch member and the output side clutch member are rotated as compared with the configuration in which the input side clutch member is coupled by the frictional force. Can be delivered well.

The multi-axis drive device of the ninth aspect includes a plurality of output members according to any one of claims 1 to 8, wherein each of the output shafts is connected to a plurality of movable mechanisms provided in the vehicle via a transmission member. Each of the plurality of output members is provided in correspondence with each other, and when the movable shaft of the corresponding output member slides in the one direction, it is connected with the output side clutch member and the power of the motor is transmitted and rotated. Sliding the plurality of input side clutch members and the movable shaft of an output member selected from the plurality of output members from a normal position in a bias direction by the biasing member, or pressing and sliding against the biasing member. Connecting the output side clutch member of the selected output member to a corresponding input side clutch member. And a selector member (selector member).

In the ninth aspect, the movable shaft of the output member selected from among the plurality of output members is slid by the selector member from the normal position in the biasing direction by the biasing member or pressed against the biasing member and slid. As a result, the output clutch member of the selected output member is connected to the corresponding input clutch member. For this reason, the power of the motor is transmitted from the input clutch member to the output clutch member, and is transmitted to the output shaft through the guide part from the movable shaft integrated with the output clutch member, and the output shaft rotates. The rotation of this output shaft is transmitted to the movable mechanism via the transmission member, and the movable mechanism is operated. Here, since the said several output member is an output member of any one of 1st-8th aspect, the effect similar to the above can be acquired.

According to the present invention, there is an effect that an output member and a multi-axis driving apparatus which can achieve a lighter weight and a lower cost than in the prior art are provided.

1 is a perspective view showing a multi-axis drive device according to an embodiment of the present invention.
2 is a plan view of the multi-axis driving apparatus of FIG.
3 is a perspective view showing the configuration of the main part of the multi-axis drive device of FIG.
4 is a plan view showing the configuration of main parts of the multi-axis drive device of FIG.
5A to 5C show the configuration of the output member of the multi-axis drive device of FIG. 1, (A) perspective view, (B) longitudinal relationship perspective view, and (C) longitudinal relationship cross section.
6A to 6B are longitudinal cross-sectional views showing a state in which (A) the movable shaft and the output side bevel gear of the output member of FIG. 1 are positioned at the clutch cutting position with respect to the output shaft, and (B) the movable shaft and the output side bevel gear are output shafts. It is a longitudinal cross-sectional view which shows the state which stroked as much as possible in the other direction with respect to.
(A) is sectional drawing which shows the guide part of the output member of FIG. 1, and (B)-(D) is sectional drawing which shows the other form example of a guide part.
8 is a plan view corresponding to FIG. 3, illustrating another example of the selector member.
9A to 9C show another embodiment of the output member, (A) Longitudinal relationship cross-sectional view showing a state where the movable shaft and the output side bevel gear are positioned at the clutch connection position with respect to the output shaft, (B) The movable shaft and the output side bevel gear Is a longitudinal sectional view showing a state in which the clutch is positioned at a clutch cutting position with respect to the output shaft, and (C) a longitudinal sectional view showing a state in which the movable shaft and the output side bevel gear have the maximum stroke in the reverse direction with respect to the output shaft.

(1) Configuration of multi-axis drive system

1 is a perspective view of a multi-axis drive device according to an embodiment. This multi-axis drive device selectively drives a plurality of movable mechanisms of a vehicle electric seat not shown by one motor. The movable mechanism includes, in this case, a lifter mechanism for adjusting the height of the seat seat surface, a reclining mechanism for adjusting the angle of the seat bag (backrest), and a slide mechanism for adjusting the front and rear positions of the seat ( slide mechanism). These movable mechanisms operate by forward and reverse rotation of the drive shaft of each mechanism.

In FIG. 1 and FIG. 2, the code | symbol 1 is an apparatus case, and the code | symbol 10 is a motor. The motor 10 has the rotating shaft 11 which protrudes upwards, and is fixed to the back surface of the apparatus case 1 through the bracket 12. As shown in FIG. The clutch unit 2 is accommodated in this apparatus case 1. In addition, the clutch unit 2 is comprised by the cover which is not shown in the figure attached to the apparatus case 1. As shown in FIG. Moreover, the apparatus case 1 is fixed to members, such as a seat frame, using the some screw insertion hole 15. As shown in FIG.

As shown in FIG. 3, the clutch unit 2 includes a plurality of input members 3 provided for each of the mechanisms to which the power of the motor 10 is transmitted, and a torque cable (transmission member not shown). A plurality of output members 4 having output shafts 20 connected through the plurality of output members 4 and each of the input members 3 and 4, and each output shaft 20 from the input member 3. The clutch mechanism 80 which intermittently comes into contact with the transmission of the power to (), the selector member (conversion means) 5 which selectively connects the clutch mechanism 80, and the selector member 5 The operation shaft 6 which operates is provided. 3 and 4 are plan views of the state excluding the device case 1 and the gear holder 7.

As shown in FIG. 4, the plurality of input members 3 are provided with a plurality (in this case, three) of input gears 13 engaged with the pinion 11a fixed to the upper end of the rotation shaft 11. Doing. The input gear 13 is a spur gear having a rotating shaft parallel to the rotating shaft 11, and an input side bevel gear (input clutch member) 14 formed of resin is fixed concentrically on the end face. The input gear 13 and the input side bevel gear 14 are supported by the apparatus case 1 as a rotating material through an input shaft (not shown) parallel to the rotation shaft 11 along the Z direction. The power of the motor 10 is transmitted to each input gear 13, and each input side bevel gear 14 is always rotated at the time of the motor 10 operation | movement.

Reference numeral 7 in Figs. 1 and 2 is a plate-shaped gear holder. This gear holder 7 is fixed in the apparatus case 10 by turning over each input member 3. Guide protrusions 71 protruding in the Z direction are formed at predetermined positions of the gear holder 7. Moreover, the said selector member 5 is a plate-shaped member long in a Y direction in FIGS. 1 and 2. The selector member 5 is provided with a guide hole 54 extending in the Y direction corresponding to the guide protrusion 71, and the guide protrusions 71 are inserted into the guide holes 54, respectively. The selector member 5 is guided to the guide protrusion 71 and is supported by the slide material on the gear holder 7 in the Y direction.

On both sides of the selector member 5 along the Y direction, the right side in FIG. 2 becomes the first cam surface 51. Moreover, the lower side of the left side surface becomes the 2nd cam surface 52, and the lock 55 in which the teeth line up in the Y direction is formed above. The operating shaft 6 is supported by a rotating material in the apparatus case 1 using the Z direction as a rotating shaft, and the operating shaft 6 is formed with a pinion 61 engaged with the lock 55. . An operation member such as a dial or a lever (not shown) disposed outside the cover 13 is fixed to the operation shaft 6. When the operating shaft 6 is rotated through the operating member, the selector member 5 moves in the Y direction along the rotational direction of the operating shaft 6 through the lock 55 by the rotating pinion 61. It reciprocates and feeds.

As for the motor 10, ON / OFF and a rotation direction are selected by the switch which is not shown in figure. When the motor 10 moves, all the input members 3 rotate. Moreover, it is preferable that a switch is provided in the said operation member. This is because operation of the clutch unit 2, that is, selection of the movable mechanism and ON / OFF of the motor 10 can be performed by a series of operations.

As shown in FIG. 4, the some output member 4 is arrange | positioned in the X direction both sides of the selector member 5 opposing each cam surface 51 and 52. As shown in FIG. In this case, two output members 4 (the first output member 4A and the second output member 4B) are disposed apart from each other in the Y direction with respect to the first cam surface 51, and the second cam surface 52 is disposed. One output member 4 (third output member 4C) is disposed. The plurality of output members 4 have an output shaft 20, and the thrust direction of the output shaft 20 is parallel to the X and Y planes orthogonal to the Z direction, and is a predetermined angle with respect to the cam surfaces 51 and 52. It is accommodated in the apparatus case 1 in an oblique state.

As shown in FIG. 5, each output shaft 20 has a cylindrical portion 26 formed on the tip side of the large-diameter portion 25, and is arranged at a predetermined distance from the selector member 5. A flange 25a is formed at the rear end of the large diameter portion 25. Each output shaft 20 is a rotating material in the cylindrical bearing holder part 1a formed in the apparatus case 1 through the bearing bush which the large diameter part 25 does not show in figure, and is made in the thrust direction. Is supported in an unmovable state. Each output shaft 20 is, for example, a mechanism for adjusting the height of the seat seat surface of the vehicle electric seat, a reclining mechanism for adjusting the angle of the seat bag (backrest), a mechanism for adjusting the front and rear positions of the seat, and the like. Is connected via a torque cable (transmission member) not shown.

On the tip side (selector member 5 side) of the output shaft 20, a power transmission unit 30 is provided which transmits the rotation of the input bevel gear 14 on the corresponding input gear 13 to the output shaft 20. have. As shown in FIG. 5, the power transmission unit 30 includes a movable shaft 40, an output side bevel gear (output side clutch member) 50, and a coiled spring (load member) 60. The movable shaft 40 is mounted on the outer circumferential side of the output shaft 20 so as to be able to move forward and backward in the direction of the selector member 5. The movable shaft 40 is slidable in the axial direction of the output shaft 20 by the guide unit 70 and is externally mounted on the output shaft 20 in a state where relative rotation is impossible.

The guide part 70 in this case is formed in the outer engaging part 21 of the cross-sectional uneven | corrugated shape formed in the whole outer peripheral surface of the output shaft 20, and the inner peripheral surface of the movable shaft 40, and is axial direction to the outer engaging part 21. The inner engagement portion 43 has a cross-sectional uneven shape that is slidably engaged. In this case, the engaging portions 21 and 43 are composed of so-called splines in which a plurality of cross-sectional spherical grooves and protruding grooves engaged with each other are formed alternately.

At the tip of the movable shaft 40, an output side bevel gear 50 which can be engaged with the input side bevel gear 14 is integrally formed concentrically. The output side bevel gear 50 forms the clutch mechanism 80 together with the input side bevel gear 14. At the tip of the movable shaft 40 and at the center of the output side bevel gear 50, a recess portion 41 protruding to the tip side is formed. The guide hole 22 opened to the tip side is formed in the shaft center of the output shaft 20, The coil spring 60 which presses so that the movable shaft 40 may advance to the selector member 5 side in this guide hole 22 may be carried out. Is housed. In the output shaft 20 and the movable shaft 40, projections 24 and 42 are formed at the ends of the coil spring 60 to position the coil spring 60, respectively. The rear end face of the output shaft 20 is provided with a mounting hole 23 having a spherical cross section, and one end of the torque cable is attached to the mounting hole 23. The torque cable rotates together with the output shaft 20.

The coil spring 60 is accommodated inside the cylindrical portion 26 and the movable shaft 40 of the output shaft 20 in a compressed state, and the output spring bevel gear 50 is selected by the coil member 60. 5) in the direction (one direction in the axial direction of the movable shaft 40), the tip of the recess portion 41 is projected abutting on the cam surface (51, 52). The tip surface of the recessed part 41 is formed in spherical shape, and when the selector member 5 is conveyed in the Y direction, it contacts with the cam surfaces 51 and 52 which are in contact with the protrusion.

As shown in FIG. 2 and FIG. 4, the first cam surface 51 of the selector member 5 has a convex portion 53 (first corresponding to the first output member 4A and the second output member 4B). The convex part 53A and the 2nd convex part 53B) are formed, and the convex part 53 (third convex part 53C) corresponding to 4 C of 3rd output members is formed in the 2nd cam surface 52. FIG. Formed. When the selector member 5 is conveyed in the Y direction, when it is sent, the recessed portion 41 of any one output member 4 is inserted into the convex portion 53.

Thus, the recessed part 41 penetrates into the convex part 53, and the whole output side bevel gear 50 slides to the selector member 5 direction, and the output side bevel gear 50 engages with the input side bevel gear 14 at this time. In this case, the clutch mechanism 80 is connected to each other. The recessed part 41 of the output side bevel gear 50 penetrates the through-hole not shown formed in the wall part 72 (refer FIG. 1 and FIG. 2) formed in the said gear holder 7. As shown in FIG. The bearing bush (not shown) is press-fitted into this through hole, and the recessed part 41 is a sliding rotation material in this bearing bush, and is supported by a moving material in the thrust direction. At the time of connection of the clutch mechanism 80, the tip surface of the output side bevel gear 50 abuts on the wall portion 72, whereby the stroke end at the time of advancing of the output side bevel gear 50 is regulated.

When the motor 10 is operated and the input member 3 rotates when the clutch mechanism 80 is connected, the rotation is transmitted from the input bevel gear 14 to the output side bevel gear 50 so that the output side bevel gear 50 is rotated. It rotates, the rotation of the movable shaft 40 is transmitted to the output shaft 20, and the output shaft 20 rotates. Moreover, in the state in which the recessed part 41 protrudes and abuts on the cam surfaces 51 and 52 without being penetrated by the convex part 53, the output side bevel gear 50 is the coil spring 60 by the cam surfaces 51 and 52. As shown in FIG. ) Is pushed toward the output shaft 20. At this time, the output side bevel gear 50 is far from the input side bevel gear 14 and the clutch mechanism 80 is in a cut state.

6A shows a state where the output side bevel gear 50 and the movable shaft 40 are arranged at the clutch cutting position with respect to the output shaft 20. In this state, the coil spring 60 is compressed by a predetermined amount from the state shown in FIG. 5C, but the projection 42 is inserted into the end of the coil spring 60 so that the buckling of the coil spring 60 To be prevented. 6 (B), the output side bevel gear 50 and the movable shaft 40 are opposite to the one direction with respect to the output shaft 20 (the other direction: the direction opposite to the bias direction of the coil spring 60). The stroke state as shown to the maximum is shown. When the output member 4 can be assembled to the apparatus case 1 and the gear holder 7, the coil spring 60 is compressed to the state shown in FIG. 6 (B), but after that the coil spring 60 ) Is not compressed than the state shown in Fig. 6A. For this reason, the durability of the coil spring 60 is improved.

Here, in this embodiment, all of the movable shaft movable shaft 40 in which the above-mentioned output shaft 20 and the output side bevel gear 50 were integrally formed is molded from resin as a material. As the resin, an appropriate kind is selected. For example, PBT (polybutylene terephthalate) or the like which is effective in terms of strength is preferably used for the output shaft 20. In addition, the movable shaft 40 including the output side bevel gear 50 is preferably POM: polyacetal resin (polyoxymethylene) or the like that is effective in sliding with the input side bevel gear 14. Is used.

(2) Operation of multi-axis drive system

Next, the operation of the multi-axis drive device will be described.

As for the movable shaft 40 in the power transmission part 30 attached to the coil spring 60 to the selector member 5 side, the selector member 5 reciprocates in a Y direction with the rotation of the operation shaft 6. By moving, the tip 41 has an output shaft which reciprocates the clutch cut position in contact with the cam faces 51 and 52 of the selector member 5 and the two positions of the clutch connection position by entering the convex portion 53 ( 20) Sliding. As the selector member 5 is moved, the recessed portion 41 of the movable shaft 40 at the clutch cutting position enters the convex portion 53 via the inclined surface and advances to the clutch cutting position. And when the selector member 5 moves, the recessed part 41 abuts on the cam surfaces 51 and 52 via an inclined surface.

In the clutch cutting position, the camshaft 51 and 52 of the selector member 5 are moved against the coil spring 60 such that the movable shaft 40 resists the coil spring 60 like the power transmission units 30 on the left and right sides of FIG. By pressing the recessed part 41, it degenerates to the output shaft 20 side. As a result, the output side bevel gear 50 is far from the input side bevel gear 14, and the clutch mechanism 80 is in a cut state. In the state in which the clutch mechanism 80 is cut, the input gear 13 which rotates by the operation of the motor 10 revolves, and the power of the motor 10 is not transmitted to the output side bevel gear 50, and the output shaft 20 ) Does not rotate. The torque cable therefore does not work.

Next, when the selector member 5 is moved by rotating the operation shaft 6, the convex portion 53 opposes the recessed portion 41 of the movable shaft 40. At this time, the recessed part 41 enters the convex part 53 via the inclined surface, and the movable shaft 40 advances to the clutch connection position. And the output side bevel gear 50 meshes with the input side bevel gear 14, and the clutch mechanism 80 will be in a connected state. When the clutch mechanism 80 is connected, rotation of the motor 10 is transmitted from the input side bevel gear 14 fixed to the input gear 13 to the output side bevel gear 50, and furthermore, with the output side bevel gear 50. It is transmitted to the output shaft 20 through the guide part 70 from the integral movable shaft 40, and the output shaft 20 rotates. Then, the torque cable rotates to operate.

The above is the operation of the multi-axis drive device, and faces the power transmission unit 30 of the output shaft 20 to rotate the operation shaft 6 through the operation member and to operate the convex portion 53 of the selector member 5. By doing so, it is possible to operate the output shaft 20, whereby the respective movable mechanisms of the vehicle power transmission seat are selectively driven. The switch for turning the motor 10 on and off may be separately arranged. However, if the switch is provided on the operation member, the motor 10 is operated by selecting the output shaft 20 to be operated to operate the output shaft 20. Since the operation to operate can be performed smoothly by a series of operations, it is preferable.

(3) Effect of this embodiment

According to the multi-axis drive device of this embodiment, the guide part 70 of the output member 4 is comprised by the shape of the outer peripheral surface of the output shaft 20, and the shape of the inner peripheral surface of the movable shaft 40 engaging with the said outer peripheral surface. have. For this reason, the stress which acts between them at the time of the rotation transmission from the movable shaft 40 to the output shaft 20 can be disperse | distributed to the wide range of the outer peripheral surface of the output shaft 20 and the inner peripheral surface of the movable shaft 40. FIG. For this reason, even if the output shaft 20, the movable shaft 40, and the output side clutch member 50 integrated with this are made of resin, the strength necessary for transmitting the power (rotation power) of the motor can be ensured, so that the weight can be reduced. There is resident effect to be able to do. Moreover, since it does not require metal processing etc., it can manufacture at low cost and can also reduce cost.

Moreover, in this embodiment, since the movable shaft 40 is slidably mounted on the output shaft 20 through the guide part 70 which becomes a spline, the circumference | surroundings of the movable shaft 40 with respect to the output shaft 20 are slidable. The positioning of the direction is precise and accurate, and at the same time, stress concentration at the time of rotation transfer from the movable shaft 40 to the output shaft 20 is prevented, and deterioration is also prevented.

In addition, in this embodiment, the movable shaft 40 provided with the output side bevel gear 50 is externally mounted on the outer peripheral side of the output shaft 20, and the coil spring 60 is mounted inside the movable shaft 40 in the output shaft 20. As shown in FIG. By disposing inside, since the movable shaft 40 can be made larger in size than the conventional one without making the whole larger, it is possible to have the necessary strength while being made of resin. That is, the strength can be ensured while the weight can be reduced.

Moreover, in this embodiment, the guide hole 22 opened to the tip side is formed in the output shaft 20, and the coil spring 60 arrange | positioned inside the output shaft 20 and the movable shaft 40 is guide hole ( Housed in 22). For this reason, since the length of the coiled spring 60 can be lengthened by the depth of the guide hole 22, the durability of the coiled spring 60 can be improved. Moreover, since the projection 42 which positions the edge part of the coil spring 60 is provided in the movable shaft 40, the coil spring 60 accompanying the sliding of the movable shaft 40 with respect to the output shaft 20 is carried out. When this decreases, the tip of the output shaft 20 and the coil spring 60 can be prevented or suppressed from interfering.

Moreover, in this embodiment, since the projection 42 which positions the coil spring 60 to the movable shaft 40 is inserted in the edge part of the coil spring 60, when the coil spring 60 reduces, it buckles. Doing so can be suppressed by the projections 42. Therefore, the interference between the tip of the output shaft 20 and the coil spring 60 can be effectively prevented or suppressed.

In addition, in this embodiment, since the output side bevel gear 50 is integrally molded with the movable shaft 40, the assembly process and the number of parts can be reduced, further reducing the cost and at the same time, a reaction occurs between them. Otherwise, deterioration due to recoil is prevented. In addition, by integrally molding the movable shaft 40 and the output side bevel gear 50, there is no need to make the design including the corresponding tolerances in consideration of the difference in thermal expansion at all, resulting in lower cost. have.

In addition, in this embodiment, since the input side bevel gear 14 as the input side clutch member and the output side bevel gear 50 as the output side clutch member mesh with each other, for example, the input side clutch member and the output side clutch member are caused by frictional force. Compared with the configuration to be combined, the transmission of the rotation can be performed well.

(4) Other forms of guide

As the guide part 70 which can slide to the outer peripheral side of the output shaft 20 in the axial direction of the output shaft 20, and which the movable shaft 40 which is not relatively rotatable is exteriorly shown, the spline shown in FIG. Similarly, it is preferable that there are a plurality of engaging portions in the circumferential direction so that the stress is dispersed as much as possible. 7 (B)-(D) have shown the form of the other guide part which has such a function.

The outer engagement part 21 of the cross-sectional uneven | corrugated shape formed in the outer peripheral surface of the output shaft 20 which comprises the guide part 70 of FIG. 7B consists of many grooves and protrusion grooves of a cross-sectional triangle, and guide part ( The inner engagement portion 43 formed on the inner circumferential surface of the movable shaft 40 constituting the 70 is composed of a plurality of grooves and protruding grooves in the cross-section triangular shape slidably engaged in the axial direction with the outer engagement portion 21. .

In addition, in FIG.7 (C), the cross-sectional shape of the whole output shaft 20 is a star shape, and the outer engaging part 21 is comprised by the groove | channel and protrusion groove of several triangular cross-sectional shape in this case (six in this case). . The inner circumferential surface of the movable shaft 40 is formed of an inner engaging portion 43 having a cross-sectional star-shaped groove formed from a cross-sectional triangular groove and a projecting groove slidably engaged with the outer engaging portion 21 in the axial direction. In this case, the guide part 70 is comprised by these outer side engaging parts 21 and the inner side engaging parts 43. As shown in FIG.

In FIG. 7D, the output shaft 20 is formed in a polygonal cross section (in this case, octagonal shape), and the inner circumferential surface of the movable shaft 40 can slide in the axial direction on the outer circumferential surface of the polygonal shape of the output shaft 20. It is formed in a polygonal cross-sectional shape that is engaged with each other. In this case, the guide part 70 is comprised by the polygonal outer peripheral surface of the output shaft 20, and the polygonal inner peripheral surface of the movable shaft 40. As shown in FIG.

7 is an example of the shape of the guide portion of the present invention. In addition to the guide portion, for example, the outer frame shape of the output shaft cross section is corrugated, and the inner circumferential surface cross section of the movable shaft slides on the corrugated output shaft cross section. Various forms, such as the waveform image which can be engaged, can be considered.

(5) Supplementary explanation of embodiment

In addition, although the input side bevel gear 14 and the output side bevel gear 50 were applied as the input side clutch member and the output side clutch member in the said embodiment, this invention is not limited to this. The configuration can be changed as appropriate.

Moreover, in the said embodiment, although the output side bevel gear 50 as an output side clutch member was formed integrally with the movable shaft 40, this invention is not limited to this, An output side clutch member is a separate object from a movable shaft. It can be formed into a structure fixed to the movable shaft by being molded at the same time and by thermal welding.

Moreover, in the said embodiment, although the output shaft 20 provided the structure which has the processus | protrusion 24, this invention is not limited to this, It can be set as the structure which the processus | protrusion 24 was abbreviate | omitted. Even in that case, the coil spring 60 can be positioned by the normal part 26 of the output shaft 20.

Moreover, in the said embodiment, although the movable shaft 40 provided the structure which has the processus | protrusion 42 as a positioning part, this invention is not limited to this, The edge part of the coil spring 60 is replaced with the procession | protrusion 42. The annular groove to fit is formed in the movable shaft 40, and this can be called a positioning part. Moreover, the structure with which the positioning part was abbreviate | omitted is also possible.

Moreover, in the said embodiment, although the coiled spring 60 as the biasing member was set as the structure accommodated in the guide hole 22 of the output shaft 20, this invention is not limited to this, The structure in which the guide hole 22 was abbreviate | omitted You can do Moreover, it is also possible to apply bias members other than a coiled spring.

In addition, in the said embodiment, although the coiled spring 60 as the biasing member was arrange | positioned in the inside of the output shaft 20 and the movable shaft 40, this invention is not limited to this, The biasing member is a thing of an output shaft and a movable shaft. It can be set as an external configuration.

In addition, in the said embodiment, although the select member 5 was made to slide with rotation of the operation shaft 6, this invention is not limited to this, The structure of a select member can be changed suitably. For example, as shown in FIG. 8, the structure by which the disk shaped dial cam 90 becomes a select member is also possible. This dial cam 90 is arranged concentrically with the rotation shaft 11 and is supported by a rotating material with the center as the axis. A plurality of convex portions 91 are formed at predetermined portions of the circumferential surface of the dial cam 90. Both ends of the circumferential direction side of these convex portions 91 are formed in the inclined surface connected to the circumferential surface.

In this dial cam 90, the clutch mechanism 80 is cut | disconnected by the outer peripheral surface 92 pressing the movable shaft 40, and the recessed part 41 of the movable shaft 40 is formed in the convex part 91 of the dial cam 90. FIG. ) Enters and exits, and the clutch mechanism 80 is connected. In addition, for example, it corresponds to arrangement | positioning of the input side bevel gear 14 and the output side bevel gear 50, etc., and can operate the said reversely. That is, when the outer circumferential surface 92 of the dial cam 90 holds the movable shaft 40, the clutch mechanism 80 is connected, and the recessed portion of the movable shaft 40 is connected to the convex portion 91 of the dial cam 90. When 41) enters and exits, the clutch mechanism 80 may be configured to cut. This point is the same also about the select member 5 which concerns on the said embodiment.

Moreover, in the said embodiment, although the outer peripheral surface of the output shaft 20 and the inner peripheral surface of the movable shaft 40 were comprised, the present invention is not limited to this, and like the output member 4 'shown in FIG. The outer circumferential surface of the movable shaft 40 'and the inner circumferential surface of the output shaft 20' can be engaged (a configuration in which the movable shaft is incorporated as an output shaft).

In this output member 4 ', the output shaft 20' has the outer diameter of the large diameter part 25, and the outer diameter of the cylindrical part 26 'with the same diameter, and the cylindrical part 26' has a larger diameter than the said embodiment. It is formed with a large diameter. Moreover, the movable shaft 40 'is formed with a diameter smaller than the said embodiment, and is inserted in the inside of the cylindrical part 26'. On the inner circumferential surface of the output shaft 20 ', an inner engaging portion 21' having a cross-sectional uneven shape is formed, and on the outer circumferential surface of the movable shaft 40 ', it is slidably engaged to the inner engaging portion 21' in the axial direction. The outer engagement part 43 'of cross-sectional unevenness | corrugation shape is formed. Each engaging portion 21 ', 43' constitutes a guide portion 70 ', and the movable shaft 40' is slidable in the axial direction of the output side 20 'by the guide portion 70'. And is built in the output side 20 'in a state where relative rotation is impossible. Moreover, the annular groove 56 is formed in the site | part which opposes the tip of the cylindrical part 26 'in the output side bevel gear 50' integral with the movable shaft 40 ', and the cylinder in the said groove 56 is carried out. By inserting the tip side of the portion 26 ', the axial movement of the movable shaft 40' with respect to the output shaft 20 'is permitted.

Moreover, the coil spring 60 is accommodated in the compressed state inside the output shaft 20 'and the movable shaft 40'. The outer diameter of this coil spring 60 is set slightly smaller than the inner diameter of the movable shaft 40 ', and the displacement of the coil spring 60 with respect to the movable shaft 40' in the radial direction is limited. Moreover, the projection 24 formed in the output shaft 20 'is inserted in the edge part of the coil spring 60. As shown in FIG. For this reason, the coil spring 60 is positioned in the output shaft 20 '.

Also in this output member 4 ', the same effect as the output member 4 which concerns on the said embodiment resides. 9A shows a state where the movable shaft 40 'and the output side bevel gear 50' are positioned at the clutch connection position with respect to the output shaft 20 ', and FIG. 9B shows the movable shaft 40' and the output side. The bevel gear 50 'shows the state which is located in the clutch cutting position with respect to the output shaft 20', and FIG. 9C shows that the movable shaft 40 'and the output side bevel gear 50' are with respect to the output shaft 20 '. The state which stroked to the other direction (direction resisting the coil spring 60) to the maximum is shown. The coil spring 60 is compressed to the state shown in FIG. 9C when the output member 4 'can be assembled to the apparatus case 1 and the gear holder 7 as in the above embodiment.

Moreover, the multi-axis drive apparatus of the said embodiment is suitable as a multi-axis drive apparatus at the time of operating the motor-driven electric seat by the motor 10, for example. That is, in a movable mechanism of a vehicle electric seat, for example, a mechanism for adjusting the height of the seat seating surface, a reclining mechanism for adjusting the angle of the seat bag (backrest), and a mechanism for adjusting the front and rear positions of the seat, By connecting via a torque cable connected to each output shaft 20, the power of the motor 10 can be selectively branched to each movable mechanism, and these movable mechanisms can be operated. However, the multi-axis drive device of the present invention can be applied to a mechanical device in which a plurality of movable mechanisms are selectively driven, without being limited to such a transmission seat.

Claims (9)

An output shaft made of resin applied to a mechanical device for a vehicle,
A movable shaft made of resin attached to the output shaft,
An output clutch member made of resin integrally provided with the movable shaft;
A guide portion configured of a shape of one outer circumferential surface of the output shaft and the movable shaft and a shape of the other inner circumferential surface engaged with the one outer circumferential surface so as to slidably move the movable shaft in the axial direction with respect to the output shaft;
A biasing member for biasing the movable shaft in one direction or the opposite direction in the axial direction,
An output member having a.
The method of claim 1,
The guide portion includes an outer engagement portion having a cross-sectional uneven shape formed along the axial direction of the one outer circumferential surface, and an inner engagement portion having a cross-sectional uneven shape formed on the other inner circumferential surface and slidably engaged in the axial direction with the outer engagement portion. Output member configured.
The method of claim 1,
The one side is formed in a cross-sectional polygonal shape, the other inner peripheral surface is formed in a cross-sectional polygonal shape that is slidably engaged in the axial direction to the outer peripheral surface of the one polygon,
The guide part is an output member configured by an outer circumferential surface of the one polygon and an inner circumferential surface of the other polygon.
4. The method according to any one of claims 1 to 3,
The biasing member is an output member disposed inside the output shaft and the movable shaft.
5. The method according to any one of claims 1 to 4,
An inner circumferential surface of the movable shaft and an outer circumferential surface of the output shaft engage with each other, the output shaft is formed with a guide hole opened on the tip side, a coil spring serving as the biasing member is accommodated in the guide hole, and the movable shaft has an end portion of the coil spring. An output member provided with a positioning unit for positioning the position.
The method of claim 5,
The said positioning part is an output member which is a protrusion inserted in the edge part of the said coil spring.
7. The method according to any one of claims 1 to 6,
The output member clutch member is formed integrally with the movable shaft.
8. The method according to any one of claims 1 to 7,
And the output side clutch member is an output side bevel gear that meshes with an input side bevel gear as an input side clutch member when the movable shaft slides in the one direction.
A plurality of output members according to any one of claims 1 to 8, wherein each of the output shafts is connected to a plurality of movable mechanisms provided in the vehicle via a transmission member;
Each of the plurality of output members is provided in correspondence with each other, and when the movable shaft of the corresponding output member slides in the one direction, it is connected with the output side clutch member and the power of the motor is transmitted and rotated. A plurality of input side clutch members,
The output side of the selected output member by sliding the movable shaft of the output member selected from the plurality of output members in a bias direction by the biasing member from a normal position, or by pressing against the biasing member to slide against the biasing member. A selector member for connecting a clutch member to a corresponding input side clutch member;
Multi-axis drive device having a.
KR1020137014931A 2010-12-08 2011-12-08 Output member and multi-shaft drive device KR101592076B1 (en)

Applications Claiming Priority (3)

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JPJP-P-2010-273840 2010-12-08
JP2010273840 2010-12-08
PCT/JP2011/078458 WO2012077759A1 (en) 2010-12-08 2011-12-08 Output member and multi-shaft drive device

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EP (1) EP2650561B1 (en)
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CN103249964A (en) 2013-08-14
WO2012077759A1 (en) 2012-06-14
EP2650561B1 (en) 2015-08-19
CN103249964B (en) 2016-04-13
EP2650561A4 (en) 2014-05-21
US20130255441A1 (en) 2013-10-03
KR101592076B1 (en) 2016-02-04
JPWO2012077759A1 (en) 2014-05-22
US9222562B2 (en) 2015-12-29
JP5873806B2 (en) 2016-03-01
EP2650561A1 (en) 2013-10-16

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